restic/internal/dump/zip.go

63 lines
1.3 KiB
Go

package dump
import (
"archive/zip"
"context"
"io"
"path/filepath"
"github.com/restic/restic/internal/errors"
"github.com/restic/restic/internal/restic"
)
type zipDumper struct {
w *zip.Writer
}
// Statically ensure that zipDumper implements dumper.
var _ dumper = zipDumper{}
// WriteZip will write the contents of the given tree, encoded as a zip to the given destination.
func WriteZip(ctx context.Context, repo restic.Repository, tree *restic.Tree, rootPath string, dst io.Writer) error {
dmp := zipDumper{w: zip.NewWriter(dst)}
return writeDump(ctx, repo, tree, rootPath, dmp, dst)
}
func (dmp zipDumper) Close() error {
return dmp.w.Close()
}
func (dmp zipDumper) dumpNode(ctx context.Context, node *restic.Node, repo restic.Repository) error {
relPath, err := filepath.Rel("/", node.Path)
if err != nil {
return err
}
header := &zip.FileHeader{
Name: filepath.ToSlash(relPath),
UncompressedSize64: node.Size,
Modified: node.ModTime,
}
header.SetMode(node.Mode)
if IsDir(node) {
header.Name += "/"
}
w, err := dmp.w.CreateHeader(header)
if err != nil {
return errors.Wrap(err, "ZipHeader")
}
if IsLink(node) {
if _, err = w.Write([]byte(node.LinkTarget)); err != nil {
return errors.Wrap(err, "Write")
}
return nil
}
return GetNodeData(ctx, w, repo, node)
}